diff --git a/backend/x11/output.c b/backend/x11/output.c index 9f8918ab..151807dd 100644 --- a/backend/x11/output.c +++ b/backend/x11/output.c @@ -47,8 +47,16 @@ static bool output_set_custom_mode(struct wlr_output *wlr_output, output_set_refresh(&output->wlr_output, refresh); const uint32_t values[] = { width, height }; - xcb_configure_window(x11->xcb_conn, output->win, + xcb_void_cookie_t cookie = xcb_configure_window_checked(x11->xcb_conn, output->win, XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, values); + + xcb_generic_error_t *error; + if ((error = xcb_request_check(x11->xcb_conn, cookie))) { + wlr_log(WLR_ERROR, "Could not set window size to %dx%d\n", width, height); + free(error); + return false; + } + return true; }